Table pad



Uct. 3, 1933. N. c. BREWER 1,928,616

TABLE PAD Filed Feb.. 1o, 19:55

Tg. l.

B7 2796, Jam-#23M 5.

@d lalfS 'v AF hihihi? A'piggy y f y 1,928,616 i n y. {TABLEPAD Y iNelson C..Brwer, Lhicago, llll., assigner to Chas. A. Brewerdt' Sons,Chicago, Ill., a partnersliipv consisting cf Nelson C.' Brewer, KennethE.

Brewer, and Everett llt. Brewer H i sppl'ieanonrcbmary10,1933. sexismo.656,063

' [afs claims( (o1. 454.63.45 i

This invention relates to pads ofthetype corn-` monly usedon tablestofprovide suitablev heat insulation againstmarring the top of the tablebyv heatvfrom a het receptacle placed: on the table.Y Padsof this typearecommonly'made `in foldable sections so` as to occupy'but ylittleyspace whenfnot .in use, and they usually ycomprisea cloth casing and a'comparativelythick ller of,A

felt or other brous material to provide the heat l@ insulation.v `Insome cases the ller` has inf cluded one or more sheets of corrugated orindented felted paper designed to produce dead air spaces within thepad, but in such' construction continued use of the pad in time flattensthev corrugated sheet to suchan extent that ythe spaces which normallyforni thedead air cell/sA are virtually closed. In other cases it'hasbeen i proposed to employ a plurality of relatively thick flat sheetseach provided with holes, with the iltWo apertured sheets overlappinginsuch a way that the cells thereof communicate with each other and withholes in the margin of ther padto i provide free circulation of airthrough the pad. This construction, of course, largely defeatstheinsulating eifect of dead air cells.

The chief object of my present invention isf to provide an improvedtable pad of the character described which shall be of simple andinexpen-` sive structure and possess high heat insulating propertieswhich will not diminish With continued use of the pad. Withthis objectin view, the pad of myv present invention isk characterized by theprovision of one or more flat filler sheets each formed with amultiplicity of holes therein that are sealed by flat imperforatesheetson both sides thereof so as to form dead air cells dis--y tributedthroughout` the entire area of the pad. In structural detail, theinvention isncapable of considerable modification `within its broad haveillustrated one `simple and practical embodiment of the invention whichin practice has been found to satisfactorily effectuate the statedpurposes and objects thereof, and referring thereto: l i

Fig. 1 is a top plan view of thefpad unfolded .for use, and broken outto show the iiller struc ture.

Fig. 2 is an' edge view thereof looking from the bottom of Fig. 1.

Fig. `3 is an enlarged vertical longitudinal secn tion, broken out, onthe line 3-3 of Fig. 1.

Fig. 4 is a similar section through one edge of the pad taken on theline 41-4 of Fig. l.

Fig. 5 is a fragmentary vertical section through principle, but intheaccompanying drawing I,

yturned inwardly to some extent to form a broad be varied asdesired. l*

The pad covering preferably comprises, for thev top member, a continuoussheet of oilgclothfor` other water-proof material designated by 10, andv.for the bottom member a continuous sheet 11 of cloth felt. By referenceto Figs. 2 and 3 it will be observed that the four sections are hingedto each other by the simple expedient of providing a pair of dependingloops 12 in the top covering 'm member 10, the sides of one loop 12being cemented to the adjacent edges of the llers of the sections A andB, and the sides of the other loop '12*` being similarly cemented to theadjacent edges of the llers of the sections C and D. The bottom`covering 1l is similarly formed with a central 4upstanding loop 13, thesides of which are' similarly cemented to the` adjacent edges of the twointermediate sections B and C. In this way both of the covering members10 and l1 being 80 flexible, the section A can be folded beneath thesection B ona hinge indicated at :c in Fig. 3, the sectionC can then befolded on top of thefsection B on the hinge indicatedat y, and thesection D can then be folded ontop of the section Con the hingeindicated at z.' This construction does not require any stitching'y atthe hinges, although such stitching may be used ifdesired.

y Describing now the preferred filling, which is identical in all of thefour sections, 14 designates 90' a comparatively thicksheet ofimperforate paper felt which directlyv underliesr the top covering 10',and 15 designates a similar sheet'which directly overliesp the bottomcovering section 11. Between the filler sheets 14 and 15 are interposed`a pair of smooth surfaced flat felt sheets 16 and 17, each of which,vas best shown in Fig. 1, is formed with a multitude of longitudinal andtransversel rows of holes 18 and 19 respectively. Between thefperforatesheets 16 and 17 is inserted a com- 100 paratively thin imperforatesheet 2i), preferably of noncombustible material, such as` asbestos, al*though a sheet of paper, cardboard or other ma terial may be used. V i VIn the formation of the outeredge portions of the pad sections, the topcovering 10 is prefer* ably carried down across the edges of the sheets14 and 16, as shown at 21 in Fig. 4and then overlap 22 on the edgeportion of the central sheet 20, being cemented to the latter; and thebottom covering 11 is similarly extended up over the edges of the sheets15 and 17 as shown at 23, and then carried inwardly and cemented to theupper side of the sheet 17 as shown at 24. This forms two compositesections, the upper comprising the parts 10, 14, 16 and 20, and thelower comprising the parts 11, 15 and 17; and these two sections areunited around the edgesv of the pad by inter-locking stitching 25 which,of course, is intermitted on the upper side in the planes of the hinges:c and z and on the lower side in the plane of the hinge y.

In the described construction the holes 18 of the at perforated sheet 16are sealed at their upper ends by the sheet 14 and at their lower endsby the sheet 20; and similarly the holes 19 of the sheet 17 are sealedat their upper ends by the sheet 20 and at their lower ends by the sheet15. This construction provides throughout the entire intermediateportion of the pad a multitude of dead air cells, which provide a veryeffective insulation against the transmission of heat from a hot vesselon the pad through the latter to the surface of the table, and therebysafeguards the latter against disgurement.

I have herein shown and described, for purposes of illustration, onepractical and eicient embodiment of the invention, but it is to beunderstood that the structural details may be varied so long as theprinciple of sealed dead air cells is preserved, and hence I do notlimit the invention to the exact structure shown, but reserve all suchvariations, modifications and mechanical equivalents as fall within thespirit and purview of the claims.

I claim:

1. A heat insulating table pad, comprising an outer covering, and afiller consisting of a pair of ilat imperforate sheets next to saidcovering, a pair of fiat perforated sheets between said imperforatesheets, and a flat imperforate sheet between said perforated sheets.

2. A heat insulating table pad, comprising an outer covering, and a llertherefor consisting of a pair of imperforate felt sheets next to saidcovering, a pair of flat, smooth surfaced perforated felt sheetsbetweensaid imperforate sheets, and an imperforate asbestos sheet between saidperforated sheets.

3. A heat insulating table pad, comprising an outer covering, and afiller consisting of a pair of flat imperforate felt sheets next to saidcovering, a pair of fiat perforated felt sheets between said imperioratesheets disposed with the perforations of one sheet substantially inregister with the perforations of the other, and a flat imperfo rateasbestos sheet between said perforate sheets.

NELSON C. BREWER.

